Putting aid



FIG. 1 is a front perspective view of the putting aid showing the new design;

FIG. 2 is bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a side elevational view showing the mirror image of the opposite side view. 

The ornamental design for a putting aid, as shown and described. 